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| Mirrors > Home > ILE Home > Th. List > fzo0dvdseq | GIF version | ||
| Description: Zero is the only one of the first 𝐴 nonnegative integers that is divisible by 𝐴. (Contributed by Stefan O'Rear, 6-Sep-2015.) |
| Ref | Expression |
|---|---|
| fzo0dvdseq | ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 ↔ 𝐵 = 0)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfzolt2 10542 | . . . . . . 7 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 < 𝐴) | |
| 2 | elfzoelz 10532 | . . . . . . . 8 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 ∈ ℤ) | |
| 3 | elfzoel2 10531 | . . . . . . . 8 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐴 ∈ ℤ) | |
| 4 | zltnle 9669 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (𝐵 < 𝐴 ↔ ¬ 𝐴 ≤ 𝐵)) | |
| 5 | 2, 3, 4 | syl2anc 415 | . . . . . . 7 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐵 < 𝐴 ↔ ¬ 𝐴 ≤ 𝐵)) |
| 6 | 1, 5 | mpbid 147 | . . . . . 6 ⊢ (𝐵 ∈ (0..^𝐴) → ¬ 𝐴 ≤ 𝐵) |
| 7 | 6 | adantr 276 | . . . . 5 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → ¬ 𝐴 ≤ 𝐵) |
| 8 | 3 | adantr 276 | . . . . . . 7 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐴 ∈ ℤ) |
| 9 | elfzonn0 10576 | . . . . . . . . . 10 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 ∈ ℕ0) | |
| 10 | 9 | adantr 276 | . . . . . . . . 9 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ ℕ0) |
| 11 | simpr 110 | . . . . . . . . 9 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ≠ 0) | |
| 12 | eldifsn 3836 | . . . . . . . . 9 ⊢ (𝐵 ∈ (ℕ0 ∖ {0}) ↔ (𝐵 ∈ ℕ0 ∧ 𝐵 ≠ 0)) | |
| 13 | 10, 11, 12 | sylanbrc 421 | . . . . . . . 8 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ (ℕ0 ∖ {0})) |
| 14 | dfn2 9555 | . . . . . . . 8 ⊢ ℕ = (ℕ0 ∖ {0}) | |
| 15 | 13, 14 | eleqtrrdi 2332 | . . . . . . 7 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ ℕ) |
| 16 | dvdsle 12589 | . . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 ∥ 𝐵 → 𝐴 ≤ 𝐵)) | |
| 17 | 8, 15, 16 | syl2anc 415 | . . . . . 6 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → (𝐴 ∥ 𝐵 → 𝐴 ≤ 𝐵)) |
| 18 | 17 | impancom 260 | . . . . 5 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → (𝐵 ≠ 0 → 𝐴 ≤ 𝐵)) |
| 19 | 7, 18 | mtod 673 | . . . 4 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → ¬ 𝐵 ≠ 0) |
| 20 | 0z 9634 | . . . . . . . 8 ⊢ 0 ∈ ℤ | |
| 21 | zdceq 9699 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 0 ∈ ℤ) → DECID 𝐵 = 0) | |
| 22 | 20, 21 | mpan2 429 | . . . . . . 7 ⊢ (𝐵 ∈ ℤ → DECID 𝐵 = 0) |
| 23 | nnedc 2425 | . . . . . . 7 ⊢ (DECID 𝐵 = 0 → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) | |
| 24 | 22, 23 | syl 14 | . . . . . 6 ⊢ (𝐵 ∈ ℤ → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
| 25 | 2, 24 | syl 14 | . . . . 5 ⊢ (𝐵 ∈ (0..^𝐴) → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
| 26 | 25 | adantr 276 | . . . 4 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
| 27 | 19, 26 | mpbid 147 | . . 3 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → 𝐵 = 0) |
| 28 | 27 | ex 115 | . 2 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 → 𝐵 = 0)) |
| 29 | dvds0 12551 | . . . 4 ⊢ (𝐴 ∈ ℤ → 𝐴 ∥ 0) | |
| 30 | 3, 29 | syl 14 | . . 3 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐴 ∥ 0) |
| 31 | breq2 4129 | . . 3 ⊢ (𝐵 = 0 → (𝐴 ∥ 𝐵 ↔ 𝐴 ∥ 0)) | |
| 32 | 30, 31 | syl5ibrcom 157 | . 2 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐵 = 0 → 𝐴 ∥ 𝐵)) |
| 33 | 28, 32 | impbid 129 | 1 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 ↔ 𝐵 = 0)) |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 DECID wdc 846 = wceq 1402 ∈ wcel 2209 ≠ wne 2420 ∖ cdif 3217 {csn 3705 class class class wbr 4125 (class class class)co 6075 0cc0 8169 < clt 8350 ≤ cle 8351 ℕcn 9283 ℕ0cn0 9542 ℤcz 9623 ..^cfzo 10527 ∥ cdvds 12532 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-mulrcl 8268 ax-addcom 8269 ax-mulcom 8270 ax-addass 8271 ax-mulass 8272 ax-distr 8273 ax-i2m1 8274 ax-0lt1 8275 ax-1rid 8276 ax-0id 8277 ax-rnegex 8278 ax-precex 8279 ax-cnre 8280 ax-pre-ltirr 8281 ax-pre-ltwlin 8282 ax-pre-lttrn 8283 ax-pre-apti 8284 ax-pre-ltadd 8285 ax-pre-mulgt0 8286 ax-pre-mulext 8287 |
| This theorem depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-iun 4009 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-po 4436 df-iso 4437 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-fv 5380 df-riota 6028 df-ov 6078 df-oprab 6079 df-mpo 6080 df-1st 6364 df-2nd 6365 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 df-sub 8489 df-neg 8490 df-reap 8893 df-ap 8900 df-div 8993 df-inn 9284 df-n0 9543 df-z 9624 df-uz 9901 df-q 9999 df-fz 10391 df-fzo 10528 df-dvds 12533 |
| This theorem is referenced by: fzocongeq 12603 |
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